Home / 38,148.72-57,149.28-21,458.04

Finding the Fourth Proportional to 38,148.72, 57,149.28 and 21,458.04

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Solution

The fourth proportional to 38,148.72, 57,149.28 and 21,458.04 is: 32,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,148.72 : 57,149.28 = 21,458.04 : x
  2. Step 2: Convert to fraction form
    38,148.72/57,149.28 = 21,458.04/x
  3. Step 3: Cross multiply
    38,148.72x = 57,149.28 × 21,458.04
  4. Step 4: Simplify right side
    38,148.72x = 1,226,311,536.21
  5. Step 5: Solve for x
    x = 1,226,311,536.21/38,148.72
  6. Step 6: Final answer
    x = 32,145.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.